Saw-filing machine



(No"Mode1.)

2 sheetssheen 1. D. HVARRINGTON SAW 'FILING MACHINE.

No. 367,756. 1Pauzented Aug. 2, 188.7.

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2 Sheehan-Sheetl (No Model.)

n. HARRINGTON.

SAW FILING:v MACHINE.

Patented Aug. -2, 1887l lIl IN 'L/EN T Dz N4 PETERS, Ptwlo-Lilmgmpher, Wnhingmn, D. C.

UNITED STATES PATENT OFFICE.

DAVID HARBINGTON, OF VORGESTER, MASSACHUSETTS.

lSAWFIgLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 367,756, dated August 2, 1887.

Applicaiion filed September Q52, 1886. Serial No. 214,239.. (No model.) Y

T 0 all whom it may concern:

Be it known that l, DAVID HAERING'roN, a citizen of the United States, residing at lVorces ter, in the county of fVorcester' and State of Massachusetts, have invented certain new and useful Improvements in Saw-Filing Machines, of which the following, together with the accom panying drawings, is a specification sufficient] y full, clear, and exact to enable persons skilled iu the art to which this invention ap pertains to make and use the same.

The objects of my present'invcntion are to provide an automatic saw-liling mechanism which shall be practical and efficient for use, and which can be conveniently adj usted for different spacings or sizes of teeth; also, to provide a saw-iling machine having a plurality of annular files peri pherally recessed to facilitate feeding forward on the work as the sawteeth are consecutively filed and the said recesses are brought into a laterally-coinciding relation therewith, in combination with an iuclined feed-plate and means for adjusting the same lo different degrees of inclination for imparting a greater or less movement for the feed; also, to provide a carrier or head for supporting and revolving a pair of circular tiles having facilities for adjustment to give greater or less distance between the peripheral edges of said files; also, to provide a rocking support or carriage adapted forholding asaw with a yielding pressure, in combination with circular files and means for regiilating the action thereof, as more fully hereinafter explained; also, to provide an extensible bed for accommodating saws of different size, in combination with the rocking support or carriage and clamp devices for retaining the saw in place thereon; also, to provide a saw-filing mechanism havinga plurality of annular rotating tiles, a yielding saw-support, withV adjusting devices for regulating the action thereof, and a flexible inclined feed device and means for adjusting the same to different degrecs of spacing. These objects I attain by mechanism the nature and operation of which are illustrated and explained in the following description, the particular subject matter claimed being hereinafter definitclyspccitied.

In the drawings, Figure l is a plan view of my improved saw-filing machine. Fig. 2 is a transverse vertical section at line w w in Fig. v

l. Fig. 3 is a top view of the lilesupporting head drawn to a somewhat larger scale. Fig. 4 is a longitudinal section of the head at line x in Fig. 3. Fig. 5 is a transverse section of the head at line i/ g/ in Fig. 3. Fig. 6 isaside view of the annular-dile. Fig. 7 is a sectional View showing the detail of the fecd-platesupporting stud.

My improved saw-filing machine comprises a frame orbase, on which is arranged a hori zonta'l shaft carrying circular rotary files. At the back of said shaft is a rocking or yielding support or carriage for holding the Vsaw and pressing it forward against the files. An adjustable inclined feed device is combined with the files, which engages with the saw-teeth "and feeds along the work as the teeth are tiled,

and suitable cushioning and gaging devices are combined with the vcarriage for controlling the pressure and action of the saw against the files.

In referring to parts, A denotes the base or main frame.

B indicates the operating-shaft, on which the tile-supporting head or heads Gis or are mounted. Said shaft isjournaled in horizontal position to turn in bearings a c, andin the present instance is, for convenience of opera tion, connected with a forwardly-projecting shaft, B', that supports the crank and balance wheel Bz by beveled gears b b, so that-the operator standing in front of the machine has the crank in convenient reach of his right hand.

the shaft B being disposed to revolve in the direction indicated.

The file is formed as an annular plate or circle, (see Fig. 6,) with its peripheral edge beveled. It is serrated on the beveled surface, as atf, and also on the upright face, so as to correspond to the required form of the saw-tooth. This annular le is provided with a recess or space, F3, where the periphery is cut away ou a circle of less diameter than the working-diameter of the le, which recess accommodates the feeding of the work, aswill be hereinafter more fully explained.

The files are preferably disposed in pairs, as indicated at F and F', in conjunction with a feeding device, and fixed on a suitable carrier or supporting-head, C.

The machine is preferably provided with a plurality of files, or with one or more file-sup- IOO porting heads on the shaft B, said heads being made with separable rims or adjustable, so that the files and feed-plate can be adjusted for various spacings of teeth. By employing a plurality of les on the shaft, or by using two or more heads each with a pair of annular les in the manner shown, the work can be very quickly performed without speeding the rotation ofthe shaft beyond the practical working speed for the files.

Theiile-carrier or head C is made substan tially as shown in Figs. 3, 4, and 5. The main part of the head, which is keyed to the shalt B, is provided with a stationary flange or rim, c, to which one of the Iiles, F, is secured,and with an adjustable rim, c', to which the other iilc, F', is secured, and means for effect ing adjustment of this rim c to and from the other for varying the distance between the working planes ofthe `tiles F and F is provid ed. The mechanism for effectin g adjustment of the head is preferably constructed to operate as follows: A rotatable sleeve, D, having a milled rim, D', is arranged on the main hub c, and longitudinally confined by a shoulder at l and by a nut, c2, screwed onto the end of the hub c. The sleeve D is fitted with ascrew-thread to the interior of the hub c of the rim c', which latter is coniined by a spline or pin, e, (see Fig. 4,) from revolving` independent from the main hub c, so that when the sleeve D is revolved the screw-thread action between the parts D and c effects the movement ofthe [ile F to or from the Ille F. A check-nut, E, is provided on the sleeve D, which can be turned up against the hub c" for clamping the parts in position of adjustment.

I indicates the feedguide or device for chang ing the relation of the saw and les from one tooth to another as the work of ling proceeds. Said device consists of aflexible plate of steel or other suitable material, the outer' edge of which is curved on a circle corresponding to the periphery of the files, and said plate is secured in a manner to enter between the saw-teeth as lhe shalt revolves. The forward end of said plate is connected with the movable rim c ofthe head, as at i, and the rear end thereof is connected with the stationary rim c by means of an adjustable stud, I). rIhe feed device occupies a position on the circle ofthe head corresponding to that of the recesses F, and acts as a diagonal or helicoidal guide between the teeth of the saw for transierring the work longitudinally. The recesses F3 permit the feeding action without requiring the saw to be moved back from filing position.

The saw-supporting mechanism preferably consists ofa frame, G, pivoted orhinged to the main frame A, as at a, so that its upper part can rock toward or from the iilesupporting shaft B. Upon the top of the frame Gis arranged the sliding bed or carriage G, upon which the saw is secured while being iiled. Said carriage is connected with its supporti-ng frame G by dovetailed or undercut guideways.

An adjustable gib or bearer, g, may be used to take up any looseness or wear of the guides. -II H indicate clamps for holding the sawblade in place on the carriage.v vThe screws of said clamps have their heads locked into un` dercut channels 71 extending crosswise of the carriage, so as to be readily adjusted forward or back, as desired. The clamp Il at the right-hand end of the machine is preferably made with an adjustable extension-bar, H2.

rlhe raised bed-surface G2 along the front ot' the carriage is made of a suitable length to accommodate the smaller sizes of, saws, and

the carriage is longitudinally grooved, as atV J, and a sliding bar, J, is fitted in said groove. which serves as an extensible or adjustable bed to accommodate saws of any length above the minimum. The bed-surface and bar J give a bed for the saw-blade, while the back frame lies on the carriage-plate G and the backward-eXtending arms thereof. The saw is arranged on the carriage as indicated by dotted lines in 1.

K indicates an arm or lever attached to the rocking carriage-frame and extending toward the front of the machine, where it is provided with a hand-l nob, K. A bolt, L, is fixed in the bed A, which extends up through an opening in said lever, and has adjusting-nuts m and a arranged thereon, one above and one below the arm, and also a spring, M, between the upper nut and top of thc arm, which spring serves as a cushion for giving yielding pressure of the saw against the files when the machine is in operation. rllhe nut it serves as a stop for the rocking action of the sawsuppo'rting mechanism, thereby gaging the depth to which the Illes work in the saw. The tension of the spring is regulated by nut m.

The adjusting-stud by which the feed-plate I is connected to the rim c of the head is made as in Fig. 7, being formed hollow and fitted with a screw-thread in the rim c.

A bolt, P, passing through. the stud, with a nut on its outer end, holdsthe plate I to the stud, and adjustment of the plate in relation to the rim and file is effected by screwing the stud in or out of the rim. A cheelennt, I, is provided for holding thestud when adjusted.

The feed-plate I, being iiexible and having its ends attached, respectively, to the flanges or rims c and c, which carry the files F and F, it follows, when adjustment of the rims is made for increasing or decreasing the space between the files, that the adjustment ot' the feed-plate to correspond therewith is effected; also, that the flexure of the guiding-plate accommodates all adjustn'ients ofthe iles.

The feeding is effected byv the crowding along ofthe saw-teeth by the inclined surface of the plate I as the shaft andviilcs revolve, the recess in the periphery allowing the lateral action at the position of feed. The frontend of the plate I takes into a tooth as theriile F leaves it, and slides the saw and carriage to IOO the left, carrying it along to a position where the part of the file following the recess will just engage with a new tooth.

The files F and F are preferably set at a distance apart of three teeth, and the feedplate is set to feed the distance of two teeth at each revolution, so that each file will work on a separate toot-hspace and the two files cut` alternate teeth or spaces.

In the operation the saw is clamped onto the carriage with its teeth in position to be engaged by the fileand feedplate, as shown by dotted lilies. The nut a is then adjusted to give proper gage, and the work is quickly performed by turning the crank B', the action of filing and feeding heilig automatic.

In the present instance I have shown a dexible adjustable feed-plate, I, in connection with each head C or pair of files F F. It will be obvious, however, that a single one of said feed-plates I located on either of the heads C, or as convenient, and operating` in the manner substantially as set forth, would accomplish the feeding operation.

In some instances, if desired, the head C maybe made to slide on the shaft in lieu of feeding by the longitudinal movement of the carriage. rIhis can be done by simply making the head loose on the shaft and confining it from revolving independent of the shaft by a longitudinal spline and groove.

Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. A rotatable file-supporting head having a fixed rim or file-attaching plate, combined with an adjustable rim or file-attaching plate that is movable iu a direction parallel with the axis of the head, and a pair of circular files respectively supported in connection with said plates, substantially as and for the pur-` pose set forth.

2. The revoluble file-supporting head, pro vided with flanges or holding-rims for sup porting files, adjustable one from the other in a direction longitudinal with the axis of rotation, combined with an adjustable inclined feed-plate, substantiall y as described,whereby the distance between the files can be regulated and the feedsimultaneously adjusted, as set forth.

rlhe file-supporting head having t-he fixed fiange c, the movable fiange c', mounted thereon, the adjustingsleeve l), confined between the shoulder d and nut E, and the check-nut E, substantially as set forth, in combination with the circular files F F and feed-plate l, substantially as set forth.

4. In a saw-filing machine, the combination of a revoluble operating-shaft, a plurality of circular files mounted ou said shaft and capable of adjustment toward or from each other, an adjustable diagonal feeding-guide rotating with said files, and a support for a saw, substantially as set forth.

5. A pair of circular peripherally-recessed files and arfiexible feedpla`te,one end of which purposes set forth.

is secured in conjunction with one of said files and the opposite end secured in conjunction with the otherA of said files, the peripheral edge of said feedpflate being formed on a eircle the diameter of which corresponds with the diameter of said files, combined with a revoluble filesupporting shaft and a worlcsupporting carriage, substantially as and for the 6. Inasaw-flingmachiue, the peripherallyrecessed files F and F', disposed at a distance apart corresponding to three of the saw-teeth,

and the diagonal peripheral feed-plate disposed for advancing the work the space of two saw-teeth at each revolution, combined with the rotating shaft and file-supporting head and the yielding saw-supportiug ear riage, substantially as set forth. l

7. The combination of a revoluble shaft, a plurality ofcircular peripherally-recessed files mounted thereon, a rocking supporti11g-frame, and an inclined feed-plate rotating with said shaft and files and adapted for engagement with the teeth of a saw supported on said frame, substantially as and for the purpose set forth.

8. The combination ofacircular file mounted upon a revolving operating-shaft, a baekwardly-yielding saw-supporting table, and an adjustable feed device acting upon the sawteeth for feeding forward the work, substalr tially as and for the purposes set forth.

9. The combinationof an annular revoluble le and a rocking support adapted for sup.- portiug a saw in position to be acted upon by said file, substantially as set forth.

10. The combination of the annular revoluble files having a peripheral recess, a rocking supportingearriage adapted for sustaining a saw in posi-tion to be operated upon by said files, and a diagonally-disposed feed-plate revolving in conjunction with said files and peripherally engaging the teeth of the saw for feeding alongthe work, substantially as set forth. i m

11. The combination of a revoluble file, a sawvsupporting carriage longitudinally movable on a rocking-frame, and provided with clamp devices for sustaining avsaw in position to be acted upon by said file, and a fiexible adjustable guide or feed plate the peripheral edge of which isadapted to engage 'the saw-teeth for feeding along the work,sub

stantiall y as set forth.

l2. rIhe combination of a revoluble head carrying a plurality of circular peripherallyrecessed files, a lougitudinally-movable carriage mounted ou a rocking support and adapted for supporting a saw in position to be acted upon by said files, and a flexible adjust` able feed-plate for feeding along the work, substantially asset forth.

13. The combination of the revolving files, a saw-supporting carriage provided with pivot supports upon the frame substantially parallel with the'axis ofthe files, and having a roek- IOO ing action toward and from the Iiles,and an adjustable stop for limiting the forward niovement of said carriage, substantially as set forth.

14.*Tl1e combination of the revolving` illes, a saw-support pivotally connected to the frame, and having; rocking` movement toward and 'from said illes, an adjustable stop for limiting the forward movement, and a cushioningspringr forcing,` forward said saw-support with a yielding pressure, substantially as hereinbe l'ore set l'orth.

l5. The combination, with revolving ling devices, of the saw bed or carriage havingl its supporting frame pivolcd to give rocking action, the arni or handle-lever iixed thereto, and the gage bolt provided with a cushioningL spring, and upper and lower nuts confining` Said spring and arm in relation to said bolt, substantially as and for the purpose set forth.

16. The combination of a revolving tiling mechanism and a saw-supporting carriage provided with an extensible bedsurface and adjustable clamps for retaining a saw-blade thereon, substantially as set forth.

17. ln a lsaw-filing machine, the saw-supporting` bed having a longitudinal groove, as J', in its surface, in combination With'a longi tudinally-adjustable bar, as J, forming,` an extension thereof, substantially as and for the purpose set forth.

1S. The adjustable stud, as l?, having the attaching-screw l, in combination with the flexible peripheral feed-plate, circular ile F, and rotating {ile-supporting head, substantiall y as and for the purpose set forth.

fitness my hand this 7th day of August, A D. 1886.

DAVID HARRINGTON.

\Vitnesses:

Crus. H. BURLEIGH. ELLA P. BLnNUs. 

